桥式起重机小车与大车运行机构设计说明

毕业设计

32/5t桥式起重机小车及大车运行机构设计

毕业设计任务书

32/5t桥式起重机小车及大车机构设计

32/5t桥式起重机小车及大车机构设计

摘要

桥式起重机是一种工作效率较高，性能稳定的常用起重机。桥式起重机的使用提高了工厂，矿山等工作环境的机械化程度。本次设计结合生产实践并参阅了众多的相关书籍，介绍了32/5t标准桥式起重机的主要结构组成以及在生产中是如何进行工作的；论述了国外桥式起重机的最新动态和研发成果。按照现有的设计理论进行了方案设计。主要做了桥式起重机中的提升机构、小车行走机构和大车行走机构等方面的设计计算和校核。大体容包含起升机构和行走机构的传动方案，零部件的空间位置分布，起升机构中卷筒，钢丝绳，滑轮组和吊钩组的设计以及运行机构中车轮和运行轨道的设计。选择并校核了如联轴器、减速器、电动机、传动轴等重要零部件的工作性能。

关键词桥式起重机起升机构大车运行机构小车运行机构

32/5t bridge crane lifting and travelling mechanism

design

Abstract

Bridge crane is a kind of common cranes which have high efficiency and stable performance. The use of bridge crane improved the degree of mechanization in factories, mines and other work environments. The design introduced 32/5t standard bridge cranes and the main structural component and their way to work in the production; discusses the latest developments at home and abroad of bridge crane and R & D results by combined production practice and refer to a large number of books. Make the program design in accordance with the existing design theory. Mainly carried out the design and calculations of the hoisting mechanism, crane trolley and travelling mechanism’s operating mechanism in the bridge crane . Generally contains the transmission scheme of hoisting mechanism and operating mechanism, the distribution of position of the parts ,the drum of lifting mechanism, wire rope, pulley and hook

block design and the design of the wheels and running track in the working mechanism. Selected and checked the parts like coupling, reducer, motor, drive shafts and other important parts of the job performance.

Keywords Bridge crane hoisting mechanism crane traveling mechanism cart mechanism

目录

摘要

Abstract

1 前言 (1)

1.1 概述 (1)

1.2 起重机械的工作特点 (1)

1.3 国外桥式起重机发展动向 (1)

1.4 国桥式起重机发展动向 (2)

2 起升机构设计 (3)

2.1 主要工作参数 (3)

2.2 主起升机构的计算 (3)

2.2.1 确定起升机构的传动方案 (3)

2.2.2 钢丝绳的选择 (4)

2.2.3 滑轮的计算和选择 (6)

2.2.4 卷筒的计算选择及强度验算 (6)

2.2.5 电动机的选择 (8)

2.2.6 电动机的发热和过载校验 (9)

2.2.7 减速器的选择 (9)

2.2.8 实际起升速度及所需功率计算 (9)

2.2.9 校验减速器输出轴强度 (10)

2.2.10 制动器的选择 (10)

2.2.11 联轴器的选择 (11)

2.2.12 验算启动时间 (12)

2.2.13 验算制动时间 (12)

2.2.14 高速浮动轴计算 (12)

3 小车运行机构设计 (14)

3.1 机构传动方案设计 (14)

3.1.1 选择车轮与轨道并验算强度 (14)

3.1.2 计算运行阻力 (15)

3.1.3 计算选择电动机 (16)

3.1.4 计算选择减速器 (16)

3.1.5 验算运行机构速度和实际功率 (17)

3.1.6 验算启动时间 (17)

3.1.7 按启动工况校核减速器功率 (18)

3.1.8 选择制动器 (18)

3.1.9 选择联轴器 (19)

3.1.10 验算低速浮动轴强度 (19)

4 大车运行机构计算 (21)